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Harish G
•9wI am planning to purchase a new automatic car in the next 6 months, with an on-road budget of ₹20 lakh in Bangalore. I am preferably looking for an SUV with a 5-star safety rating and a large boot of around 500 litres. I like the Tata Sierra, but am wary of its new naturally aspirated petrol engine paired with a DCA automatic. My annual running is low at around 7,000km, with about 30% highway usage. I understand that my usage does not ideally suit a diesel, but I am still interested due to the mileage and torque benefits. My main concern with diesel engines is DPF issues, given my low running. Do the Sierra or other Tata diesel cars face DPF issues with limited highway use? Are there any better alternatives that suit my requirements?
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Autocar India
The Tata Sierra is a very appealing car and definitely worth considering. We have driven the 1.5-litre naturally aspirated petrol with the DCA automatic, and while it is smooth, it feels sluggish, especially on the highway. Quick overtakes of fast-moving trucks require planning and effort.
Given that around 30% of your driving is on highways, we would recommend a diesel car instead. It is torquey, has a strong mid-range, and is much better suited to overtaking and relaxed long-distance driving.
Regarding DPF concerns, the issue is not low annual mileage but driving pattern. Diesel particulate filters need the car to be driven at steady speeds for some time to clean themselves. Since you do have regular highway usage, your driving pattern should allow the DPF to regenerate properly, making clogging unlikely in normal use.

Tata Sierra
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Posted on: 12 Jan 2026
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